/*!
 * image-process v0.0.1
 * (c) 2017-2017 dailc
 * Released under the MIT License.
 * https://github.com/dailc/image-process
 */

(function (global, factory) {
    typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
        typeof define === 'function' && define.amd ? define(factory) :
            (global.ImageClip = factory());
}(this, (function () {
    'use strict';

    function extend(target) {
        var finalTarget = target;

        for (var _len = arguments.length, rest = Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
            rest[_key - 1] = arguments[_key];
        }

        rest.forEach(function (source) {
            source && Object.keys(source).forEach(function (key) {
                finalTarget[key] = source[key];
            });
        });

        return finalTarget;
    }

    /**
     * 选择这段代码用到的太多了，因此抽取封装出来
     * @param {Object} element dom元素或者selector
     * @return {HTMLElement} 返回选择的Dom对象，无果没有符合要求的，则返回null
     */
    function selector(element) {
        var target = element;

        if (typeof target === 'string') {
            target = document.querySelector(target);
        }

        return target;
    }

    /**
     * 获取DOM的可视区高度，兼容PC上的body高度获取
     * 因为在通过body获取时，在PC上会有CSS1Compat形式，所以需要兼容
     * @param {HTMLElement} dom 需要获取可视区高度的dom,对body对象有特殊的兼容方案
     * @return {Number} 返回最终的高度
     */


    /**
     * 设置一个Util对象下的命名空间
     * @param {Object} parent 需要绑定到哪一个对象上
     * @param {String} namespace 需要绑定的命名空间名
     * @param {Object} target 需要绑定的目标对象
     * @return {Object} 返回最终的对象
     */

    /**
     * 加入系统判断功能
     */
    function osMixin(hybrid) {
        var hybridJs = hybrid;
        var detect = function detect(ua) {
            this.os = {};

            var android = ua.match(/(Android);?[\s/]+([\d.]+)?/);

            if (android) {
                this.os.android = true;
                this.os.version = android[2];
                this.os.isBadAndroid = !/Chrome\/\d/.test(window.navigator.appVersion);
            }

            var iphone = ua.match(/(iPhone\sOS)\s([\d_]+)/);

            if (iphone) {
                this.os.ios = true;
                this.os.iphone = true;
                this.os.version = iphone[2].replace(/_/g, '.');
            }

            var ipad = ua.match(/(iPad).*OS\s([\d_]+)/);

            if (ipad) {
                this.os.ios = true;
                this.os.ipad = true;
                this.os.version = ipad[2].replace(/_/g, '.');
            }

            // quickhybrid的容器
            var quick = ua.match(/QuickHybrid/i);

            if (quick) {
                this.os.quick = true;
            }

            // epoint的容器
            var ejs = ua.match(/EpointEJS/i);

            if (ejs) {
                this.os.ejs = true;
            }

            var dd = ua.match(/DingTalk/i);

            if (dd) {
                this.os.dd = true;
            }

            // 如果ejs和钉钉以及quick都不是，则默认为h5
            if (!ejs && !dd && !quick) {
                this.os.h5 = true;
            }
        };

        detect.call(hybridJs, navigator.userAgent);
    }

    var _createClass = function () {
        function defineProperties(target, props) {
            for (var i = 0; i < props.length; i++) {
                var descriptor = props[i];
                descriptor.enumerable = descriptor.enumerable || false;
                descriptor.configurable = true;
                if ("value" in descriptor) descriptor.writable = true;
                Object.defineProperty(target, descriptor.key, descriptor);
            }
        }

        return function (Constructor, protoProps, staticProps) {
            if (protoProps) defineProperties(Constructor.prototype, protoProps);
            if (staticProps) defineProperties(Constructor, staticProps);
            return Constructor;
        };
    }();

    function _classCallCheck(instance, Constructor) {
        if (!(instance instanceof Constructor)) {
            throw new TypeError("Cannot call a class as a function");
        }
    }

    /**
     * ios手机竖拍时会旋转，需要外部引入exif去主动旋转
     */

    var defaultetting = {
        container: '#imgclip',
        // 必须是一个image对象
        img: null,
        // 是否开启平滑
        isSmooth: true,
        // 放大镜捕获的图像半径
        captureRadius: 30,
        // 移动矩形框时的最小间距
        minMoveDiff: 1,
        // 压缩质量
        quality: 0.92,
        mime: 'image/jpeg',
        // 限制canvas显示的最大高度（不是实际高度，是css显示的最大高度）
        // 单位是像素，不传的话不限制
        maxCssHeight: 0,
        // 大小提示框的风格，0-点击时显示，1-恒显示，-1-永不显示
        sizeTipsStyle: 0,
        // 压缩时的放大系数，默认为1，如果增大，代表图像的尺寸会变大(最大不会超过原图)
        compressScaleRatio: 1,
        // ios的iPhone下主动放大一定系数以解决分辨率过小的模糊问题
        iphoneFixedRatio: 2,
        // 是否采用原图像素（不会压缩）
        isUseOriginSize: false,
        // 增加最大宽度，增加后最大不会超过这个宽度
        maxWidth: 0,
        // 使用强制的宽度，如果使用，其它宽高比系数都会失效，默认整图使用这个宽度
        forceWidth: 0,
        // 同上，但是一般不建议设置，因为很可能会改变宽高比导致拉升，特殊场景下使用
        forceHeight: 0
    };

    var ImgClip$1 = function () {
        /**
         * 构造函数
         * @param {Object} options 配置信息
         * @constructor
         */
        function ImgClip(options) {
            _classCallCheck(this, ImgClip);

            osMixin(this);
            this.options = extend({}, defaultetting, options);
            this.container = selector(this.options.container);
            this.img = this.options.img;
            this.domChildren = [];
            this.events = {};

            this.initCanvas();
            this.initClip();
            this.initMagnifier();
            this.initTransferCanvas();
            this.resetClipRect();
        }

        /**
         * 获取devicePixelRatio(像素比)
         * canvas绘制时乘以缩放系数，防止裁剪不清晰
         * （譬如320的手机上可能裁剪出来的就是640-系数是2）
         */


        _createClass(ImgClip, [{
            key: 'getPixelRatio',
            value: function getPixelRatio(context) {
                // 注意，backingStorePixelRatio属性已弃用
                var backingStore = context.backingStorePixelRatio || context.webkitBackingStorePixelRatio || context.mozBackingStorePixelRatio || context.msBackingStorePixelRatio || context.oBackingStorePixelRatio || context.backingStorePixelRatio || 1;

                var ratio = (window.devicePixelRatio || 1) / backingStore;

                ratio *= this.options.compressScaleRatio || 1;
                if (this.os.ios && this.os.iphone) {
                    ratio *= this.options.iphoneFixedRatio || 1;
                }

                return ratio;
            }
        }, {
            key: 'clear',
            value: function clear() {
                var lenD = this.domChildren && this.domChildren.length || 0;

                for (var i = 0; i < lenD; i += 1) {
                    this.container.removeChild(this.domChildren[i]);
                }
                this.domChildren = null;

                var allEventNames = Object.keys(this.events || {});
                var lenE = allEventNames && allEventNames.length || 0;

                for (var _i = 0; _i < lenE; _i += 1) {
                    this.container.removeEventListener(allEventNames[_i], this.events[allEventNames[_i]]);
                }
                this.events = null;
            }
        }, {
            key: 'initCanvas',
            value: function initCanvas() {
                this.canvasFull = document.createElement('canvas');
                this.ctxFull = this.canvasFull.getContext('2d');
                this.canvasFull.className = 'clip-canvas-full';
                this.smoothCtx(this.ctxFull);

                // 实际的像素比，绘制时基于这个比例绘制
                this.RATIO_PIXEL = this.getPixelRatio(this.ctxFull);
                // 获取图片的宽高比
                var wPerH = this.img.width / this.img.height;
                var oldWidth = this.container.offsetWidth || window.innerWidth;

                this.oldWidth = oldWidth;
                this.oldHeight = oldWidth / wPerH;
                this.resizeCanvas(oldWidth, this.oldHeight);
                this.container.appendChild(this.canvasFull);
                this.domChildren.push(this.canvasFull);
            }
        }, {
            key: 'resizeCanvas',
            value: function resizeCanvas(width, height) {
                var maxCssHeight = this.options.maxCssHeight;
                var wPerH = width / height;
                var legalWidth = this.oldWidth;
                var legalHeight = legalWidth / wPerH;

                if (maxCssHeight && legalHeight > maxCssHeight) {
                    legalHeight = maxCssHeight;
                    legalWidth = legalHeight * wPerH;
                }
                this.marginLeft = (this.oldWidth - legalWidth) / 2;

                this.canvasFull.style.width = legalWidth + 'px';
                this.canvasFull.style.height = legalHeight + 'px';
                this.canvasFull.style.marginLeft = this.marginLeft + 'px';
                this.canvasFull.width = legalWidth * this.RATIO_PIXEL;
                this.canvasFull.height = legalHeight * this.RATIO_PIXEL;

                if (this.rotateStep & 1) {
                    this.scale = this.canvasFull.width / this.img.height;
                } else {
                    this.scale = this.canvasFull.width / this.img.width;
                }
            }
        }, {
            key: 'initClip',
            value: function initClip() {
                var clipRect = document.createElement('div');

                clipRect.className = 'clip-rect';

                this.clipRect = clipRect;
                this.container.appendChild(this.clipRect);
                this.domChildren.push(this.clipRect);

                // 添加tips
                var clipTips = document.createElement('span');

                clipTips.className = 'clip-tips';
                this.clipRect.appendChild(clipTips);
                this.clipTips = clipTips;

                if (this.options.sizeTipsStyle === -1 || this.options.sizeTipsStyle === 0) {
                    // clipTips,canvas之外的
                    this.clipTips.classList.add('clip-hidden');
                }

                this.clipRectHorns = [];
                // 添加8个角
                for (var i = 0; i < 8; i += 1) {
                    var spanHorn = document.createElement('span');

                    spanHorn.className = 'clip-rect-horn ';

                    if (i === 0) {
                        spanHorn.className += 'horn-nw';
                    } else if (i === 1) {
                        spanHorn.className += 'horn-ne';
                    } else if (i === 2) {
                        spanHorn.className += 'horn-sw';
                    } else if (i === 3) {
                        spanHorn.className += 'horn-se';
                    } else if (i === 4) {
                        spanHorn.className += 'horn-n';
                    } else if (i === 5) {
                        spanHorn.className += 'horn-s';
                    } else if (i === 6) {
                        spanHorn.className += 'horn-w';
                    } else if (i === 7) {
                        spanHorn.className += 'horn-e';
                    }
                    this.clipRect.appendChild(spanHorn);
                    this.clipRectHorns.push(spanHorn);
                }

                this.resizeClip();
            }
        }, {
            key: 'resizeClip',
            value: function resizeClip() {
                this.listenerHornsResize();
                this.listenerRectMove();
                this.listenerContainerLeave();
            }
        }, {
            key: 'listenerHornsResize',
            value: function listenerHornsResize() {
                var _this = this;

                this.clipEventState = {};

                var saveEventState = function saveEventState(e) {
                    _this.clipEventState.width = _this.clipRect.offsetWidth;
                    _this.clipEventState.height = _this.clipRect.offsetHeight;
                    _this.clipEventState.left = _this.clipRect.offsetLeft - _this.marginLeft;
                    _this.clipEventState.top = _this.clipRect.offsetTop;
                    _this.clipEventState.mouseX = e.touches ? e.touches[0].pageX : e.pageX;
                    _this.clipEventState.mouseY = e.touches ? e.touches[0].pageY : e.pageY;
                    _this.clipEventState.evnt = e;
                };
                var getCurXY = function getCurXY(mouseX, mouseY) {
                    // 父容器的top和left也要减去
                    var curY = mouseY - _this.canvasFull.offsetTop - _this.container.offsetTop;
                    var curX = mouseX - _this.canvasFull.offsetLeft - _this.container.offsetLeft;

                    curY = Math.min(curY, _this.canvasFull.offsetHeight);
                    curY = Math.max(0, curY);
                    curX = Math.min(curX, _this.canvasFull.offsetWidth);
                    curX = Math.max(0, curX);

                    _this.curX = curX;
                    _this.curY = curY;

                    return {
                        curX: curX,
                        curY: curY
                    };
                };
                this.getCurXY = getCurXY;

                var moving = function moving(e) {
                    if (!_this.canResizing) {
                        return;
                    }
                    e.preventDefault();
                    e.stopPropagation();
                    var clipEventState = _this.clipEventState;
                    var target = clipEventState.evnt.target;
                    // 区分pageX与clientX
                    var mouseY = e.touches ? e.touches[0].pageY : e.pageY;
                    var mouseX = e.touches ? e.touches[0].pageX : e.pageX;
                    var curCooidinate = getCurXY(mouseX, mouseY);
                    var curX = curCooidinate.curX;
                    var curY = curCooidinate.curY;
                    var width = void 0;
                    var height = void 0;
                    var left = void 0;
                    var top = void 0;

                    if (target.classList.contains('horn-nw')) {
                        width = clipEventState.width - (curX - clipEventState.left);
                        height = clipEventState.height - (curY - clipEventState.top);
                        left = curX;
                        top = curY;
                    } else if (target.classList.contains('horn-ne')) {
                        width = curX - clipEventState.left;
                        height = clipEventState.height - (curY - clipEventState.top);
                        left = clipEventState.left;
                        top = curY;
                    } else if (target.classList.contains('horn-sw')) {
                        width = clipEventState.width - (curX - clipEventState.left);
                        height = curY - clipEventState.top;
                        left = curX;
                        top = clipEventState.top;
                    } else if (target.classList.contains('horn-se')) {
                        width = curX - clipEventState.left;
                        height = curY - clipEventState.top;
                        left = clipEventState.left;
                        top = clipEventState.top;
                    } else if (target.classList.contains('horn-n')) {
                        width = clipEventState.width;
                        height = clipEventState.height - (curY - clipEventState.top);
                        left = clipEventState.left;
                        top = curY;
                    } else if (target.classList.contains('horn-s')) {
                        width = clipEventState.width;
                        height = curY - clipEventState.top;
                        left = clipEventState.left;
                        top = clipEventState.top;
                    } else if (target.classList.contains('horn-w')) {
                        width = clipEventState.width - (curX - clipEventState.left);
                        height = clipEventState.height;
                        left = curX;
                        top = clipEventState.top;
                    } else if (target.classList.contains('horn-e')) {
                        width = curX - clipEventState.left;
                        height = clipEventState.height;
                        left = curX - width;
                        top = clipEventState.top;
                    }
                    // 一定要补上leftmargin
                    _this.clipRect.style.left = left + _this.marginLeft + 'px';
                    _this.clipRect.style.top = top + 'px';
                    _this.clipRect.style.width = width + 'px';
                    _this.clipRect.style.height = height + 'px';
                    _this.draw();
                };

                this.container.addEventListener('touchmove', moving);
                this.container.addEventListener('mousemove', moving);

                this.events.touchmove = moving;
                this.events.mousemove = moving;

                var startResize = function startResize(e) {
                    _this.canResizing = true;
                    _this.canvasMag.classList.remove('clip-hidden');
                    if (_this.options.sizeTipsStyle === 0) {
                        _this.clipTips.classList.remove('clip-hidden');
                    }
                    saveEventState(e);
                };
                var endResize = function endResize() {
                    _this.canResizing = false;
                    _this.canvasMag.classList.add('clip-hidden');
                    if (_this.options.sizeTipsStyle === 0) {
                        _this.clipTips.classList.add('clip-hidden');
                    }
                };

                this.endHronsResize = endResize;

                for (var i = 0; i < 8; i += 1) {
                    this.clipRectHorns[i].addEventListener('mousedown', startResize);
                    this.clipRectHorns[i].addEventListener('touchstart', startResize);

                    this.clipRectHorns[i].addEventListener('mouseup', endResize);
                    this.clipRectHorns[i].addEventListener('touchend', endResize);
                }
            }
        }, {
            key: 'listenerRectMove',
            value: function listenerRectMove() {
                var _this2 = this;

                var rectDom = this.clipRect;

                var moving = function moving(e) {
                    if (_this2.canResizing || !_this2.canMove) {
                        return;
                    }
                    e.preventDefault();
                    e.stopPropagation();
                    var MIN_DIFF = _this2.options.minMoveDiff;
                    var mouseY = e.touches ? e.touches[0].pageY : e.pageY;
                    var mouseX = e.touches ? e.touches[0].pageX : e.pageX;

                    var diffX = mouseX - _this2.prevRectMouseX;
                    var diffY = mouseY - _this2.prevRectMouseY;

                    if (!diffX && !diffY) {
                        return;
                    }

                    if (Math.abs(diffX) > MIN_DIFF || Math.abs(diffY) > MIN_DIFF) {
                        _this2.prevRectMouseX = mouseX;
                        _this2.prevRectMouseY = mouseY;
                    }

                    var top = rectDom.offsetTop + diffY;
                    var left = rectDom.offsetLeft + diffX;

                    if (top < 0) {
                        top = 0;
                    } else if (top > _this2.canvasFull.offsetHeight - rectDom.offsetHeight) {
                        top = _this2.canvasFull.offsetHeight - rectDom.offsetHeight;
                    }

                    if (left < _this2.marginLeft) {
                        left = _this2.marginLeft;
                    } else if (left > _this2.canvasFull.offsetWidth - rectDom.offsetWidth + _this2.marginLeft) {
                        left = _this2.canvasFull.offsetWidth - rectDom.offsetWidth + _this2.marginLeft;
                    }

                    // 这里无须再补上marginLeft
                    _this2.clipRect.style.left = left + 'px';
                    _this2.clipRect.style.top = top + 'px';
                    _this2.draw();
                };

                rectDom.addEventListener('touchmove', moving);
                rectDom.addEventListener('mousemove', moving);

                var startMove = function startMove(e) {
                    _this2.canMove = true;

                    var mouseY = e.touches ? e.touches[0].pageY : e.pageY;
                    var mouseX = e.touches ? e.touches[0].pageX : e.pageX;

                    _this2.prevRectMouseX = mouseX;
                    _this2.prevRectMouseY = mouseY;
                };

                var endMove = function endMove() {
                    _this2.canMove = false;
                };

                this.endRectMove = endMove;

                rectDom.addEventListener('mousedown', startMove);
                rectDom.addEventListener('touchstart', startMove);

                rectDom.addEventListener('mouseup', endMove);
                rectDom.addEventListener('touchend', endMove);
            }
        }, {
            key: 'listenerContainerLeave',
            value: function listenerContainerLeave() {
                var _this3 = this;

                var leaveContainer = function leaveContainer() {
                    if (_this3.canResizing) {
                        _this3.endHronsResize();
                    }
                    if (_this3.canMove) {
                        _this3.endRectMove();
                    }
                };

                this.container.addEventListener('mouseleave', leaveContainer);
                this.container.addEventListener('mouseup', leaveContainer);
                this.events.mouseleave = leaveContainer;
                this.events.mouseup = leaveContainer;
            }
        }, {
            key: 'draw',
            value: function draw() {
                // 放大镜
                this.drawMag();
                var realImgSize = this.getRealFinalImgSize(this.clipRect.offsetWidth * this.RATIO_PIXEL, this.clipRect.offsetHeight * this.RATIO_PIXEL);
                var curWidth = realImgSize.width;
                var curHeight = realImgSize.height;

                this.clipTips.innerText = curWidth.toFixed(0) + '*' + curHeight.toFixed(0);

                this.ctxFull.save();
                if (this.rotateStep & 1) {
                    this.ctxFull.clearRect(0, 0, this.canvasFull.height, this.canvasFull.width);
                } else {
                    this.ctxFull.clearRect(0, 0, this.canvasFull.width, this.canvasFull.height);
                }

                this.drawImage();
                this.drawMask();

                this.ctxFull.beginPath();

                var params = this.getClipRectParams();
                var srcX = params.srcX;
                var srcY = params.srcY;
                var sWidth = params.sWidth;
                var sHeight = params.sHeight;

                this.ctxFull.rect(srcX, srcY, sWidth, sHeight);
                this.ctxFull.clip();
                this.drawImage();
                this.ctxFull.restore();
            }
        }, {
            key: 'getClipRectParams',
            value: function getClipRectParams() {
                var offsetTop = this.clipRect.offsetTop;
                // 减去margin才是真实的
                var offsetLeft = this.clipRect.offsetLeft - this.marginLeft;
                var offsetWidth = this.clipRect.offsetWidth;
                var offsetHeight = this.clipRect.offsetHeight;
                var offsetRight = offsetLeft + offsetWidth;
                var offsetBottom = offsetTop + offsetHeight;

                var srcX = offsetLeft;
                var srcY = offsetTop;
                var sWidth = offsetWidth;
                var sHeight = offsetHeight;

                if (this.rotateStep === 1) {
                    srcX = offsetTop;
                    srcY = this.canvasFull.offsetWidth - offsetRight;
                    sWidth = offsetHeight;
                    sHeight = offsetWidth;
                } else if (this.rotateStep === 2) {
                    srcX = this.canvasFull.offsetWidth - offsetRight;
                    srcY = this.canvasFull.offsetHeight - offsetBottom;
                    sWidth = offsetWidth;
                    sHeight = offsetHeight;
                } else if (this.rotateStep === 3) {
                    srcX = this.canvasFull.offsetHeight - offsetBottom;
                    srcY = offsetLeft;
                    sWidth = offsetHeight;
                    sHeight = offsetWidth;
                }

                srcX *= this.RATIO_PIXEL;
                srcY *= this.RATIO_PIXEL;
                sWidth *= this.RATIO_PIXEL;
                sHeight *= this.RATIO_PIXEL;

                return {
                    srcX: srcX,
                    srcY: srcY,
                    sWidth: sWidth,
                    sHeight: sHeight
                };
            }
        }, {
            key: 'getRealCoordinate',
            value: function getRealCoordinate(mouseX, mouseY) {
                // 获取真实坐标系（旋转缩放后的）
                var x = mouseX;
                var y = mouseY;

                if (this.rotateStep === 1) {
                    x = mouseY;
                    y = this.canvasFull.offsetWidth - mouseX;
                } else if (this.rotateStep === 2) {
                    x = this.canvasFull.offsetWidth - mouseX;
                    y = this.canvasFull.offsetHeight - mouseY;
                } else if (this.rotateStep === 3) {
                    x = this.canvasFull.offsetHeight - mouseY;
                    y = mouseX;
                }

                x *= this.RATIO_PIXEL;
                y *= this.RATIO_PIXEL;

                return {
                    x: x,
                    y: y
                };
            }
        }, {
            key: 'drawImage',
            value: function drawImage() {
                // 宽高在旋转不同的情况下是颠倒的
                if (this.rotateStep & 1) {
                    this.ctxFull.drawImage(this.img, 0, 0, this.img.width, this.img.height, 0, 0, this.canvasFull.height, this.canvasFull.width);
                } else {
                    this.ctxFull.drawImage(this.img, 0, 0, this.img.width, this.img.height, 0, 0, this.canvasFull.width, this.canvasFull.height);
                }
            }
        }, {
            key: 'drawMask',
            value: function drawMask() {
                this.ctxFull.save();

                this.ctxFull.fillStyle = 'rgba(0, 0, 0, 0.3)';
                if (this.rotateStep & 1) {
                    this.ctxFull.fillRect(0, 0, this.canvasFull.height, this.canvasFull.width);
                } else {
                    this.ctxFull.fillRect(0, 0, this.canvasFull.width, this.canvasFull.height);
                }

                this.ctxFull.restore();
            }
        }, {
            key: 'drawMag',
            value: function drawMag() {
                var captureRadius = this.options.captureRadius;
                var centerPoint = this.getRealCoordinate(this.curX, this.curY);
                var sWidth = captureRadius * 2;
                var sHeight = captureRadius * 2;
                var srcX = centerPoint.x - captureRadius;
                var srcY = centerPoint.y - captureRadius;

                if (this.rotateStep & 1) {
                    this.ctxMag.clearRect(0, 0, this.canvasMag.height, this.canvasMag.width);
                } else {
                    this.ctxMag.clearRect(0, 0, this.canvasMag.width, this.canvasMag.height);
                }

                var drawX = 0;
                var drawY = 0;

                if (this.os.ios) {
                    // 兼容ios的Safari不能绘制srcX,srcY为负的情况
                    if (srcY < 0) {
                        // 注意先后顺序
                        drawY = this.canvasMag.height / 2 * Math.abs(srcY / captureRadius);
                        srcY = 0;
                    }
                    if (srcX < 0) {
                        // 注意先后顺序
                        drawX = this.canvasMag.width / 2 * Math.abs(srcX / captureRadius);
                        srcX = 0;
                    }
                }

                // 生成新的图片,内部坐标会使用原图片的尺寸
                this.ctxMag.drawImage(this.img, srcX / this.scale, srcY / this.scale, sWidth / this.scale, sHeight / this.scale, drawX, drawY, this.canvasMag.width, this.canvasMag.height);

                var centerX = this.canvasMag.width / 2;
                var centerY = this.canvasMag.height / 2;
                var radius = 5 * this.RATIO_PIXEL;

                // 绘制十字校准
                this.ctxMag.beginPath();
                this.ctxMag.moveTo(centerX - radius, centerY);
                this.ctxMag.lineTo(centerX + radius, centerY);
                // this.ctxMag.arc(centerX + radius, centerY, 3, 0, 2 * Math.PI);
                this.ctxMag.moveTo(centerX, centerY - radius);
                this.ctxMag.lineTo(centerX, centerY + radius);
                // this.ctxMag.arc(centerX, centerY + radius, 3, 0, 2 * Math.PI);
                this.ctxMag.strokeStyle = '#de3c50';
                this.ctxMag.lineWidth = 3;
                this.ctxMag.stroke();
            }
        }, {
            key: 'initMagnifier',
            value: function initMagnifier() {
                this.canvasMag = document.createElement('canvas');
                this.canvasMag.className = 'magnifier clip-hidden';
                this.ctxMag = this.canvasMag.getContext('2d');
                this.smoothCtx(this.ctxMag);
                this.container.appendChild(this.canvasMag);
                this.domChildren.push(this.canvasMag);

                // 需要初始化一个高度，否则如果旋转时会造不对
                // 捕获直径*像素比
                this.canvasMag.width = this.options.captureRadius * 2 * this.RATIO_PIXEL;
                this.canvasMag.height = this.options.captureRadius * 2 * this.RATIO_PIXEL;
            }
        }, {
            key: 'initTransferCanvas',
            value: function initTransferCanvas() {
                this.canvasTransfer = document.createElement('canvas');
                this.canvasTransfer.style.display = 'none';
                this.canvasTransfer.className = 'transfer-canvas';
                this.ctxTransfer = this.canvasTransfer.getContext('2d');
                this.smoothCtx(this.ctxTransfer);
                this.container.appendChild(this.canvasTransfer);
                this.domChildren.push(this.canvasTransfer);
            }
        }, {
            key: 'smoothCtx',
            value: function smoothCtx(ctx) {
                var isSmooth = this.options.isSmooth;

                ctx.mozImageSmoothingEnabled = isSmooth;
                ctx.webkitImageSmoothingEnabled = isSmooth;
                ctx.msImageSmoothingEnabled = isSmooth;
                ctx.imageSmoothingEnabled = isSmooth;
            }
        }, {
            key: 'getRealFinalImgSize',
            value: function getRealFinalImgSize(curWidth, curHeight) {
                var wPerH = this.canvasFull.width / this.canvasFull.height;
                var maxWidth = this.options.maxWidth || 0;
                var forceWidth = this.options.forceWidth || 0;
                var forceHeight = this.options.forceHeight || 0;
                var width = curWidth;
                var height = curHeight;

                if (this.rotateStep & 1) {
                    if (this.options.isUseOriginSize || this.canvasFull.width > this.img.height) {
                        // 最大不会超过原图的尺寸
                        width = this.img.width * curWidth / this.canvasFull.height;
                        height = this.img.height * curHeight / this.canvasFull.width;
                    }
                    if (maxWidth && this.canvasFull.height > maxWidth && maxWidth < this.img.height) {
                        // 使用最大宽，前提是原始大小也大于最大宽
                        width = maxWidth * curWidth / this.canvasFull.height;
                        height = maxWidth / wPerH * curHeight / this.canvasFull.width;
                    }
                    if (forceWidth) {
                        // 使用固定宽
                        width = forceWidth * curWidth / this.canvasFull.height;
                        height = (forceHeight || forceWidth / wPerH) * curHeight / this.canvasFull.width;
                    }
                } else {
                    if (this.options.isUseOriginSize || this.canvasFull.width > this.img.width) {
                        // 最大不会超过原图的尺寸
                        width = this.img.width * curWidth / this.canvasFull.width;
                        height = this.img.height * curHeight / this.canvasFull.height;
                    }
                    if (maxWidth && this.canvasFull.width > maxWidth && maxWidth < this.img.width) {
                        width = maxWidth * curWidth / this.canvasFull.width;
                        height = maxWidth / wPerH * curHeight / this.canvasFull.height;
                    }
                    if (forceWidth) {
                        // 使用固定宽
                        width = forceWidth * curWidth / this.canvasFull.width;
                        height = (forceHeight || forceWidth / wPerH) * curHeight / this.canvasFull.height;
                    }
                }

                return {
                    width: width,
                    height: height
                };
            }

            /**
             * 裁剪
             */

        }, {
            key: 'clip',
            value: function clip() {
                var params = this.getClipRectParams();
                var srcX = params.srcX;
                var srcY = params.srcY;
                var sWidth = params.sWidth;
                var sHeight = params.sHeight;
                var realImgSize = this.getRealFinalImgSize(sWidth, sHeight);
                var curWidth = realImgSize.width;
                var curHeight = realImgSize.height;

                // 注意，这个变量可能不存在，会影响判断的，所以要确保它存在
                this.rotateStep = this.rotateStep || 0;

                // 计算弧度
                var degree = this.rotateStep * 90 * Math.PI / 180;

                // 内部的转换矩阵也需要旋转（只不过不需要展示而已-譬如平移操作就无必要）
                // 注意，重置canvas大小后，以前的rotate也会无效-
                // 否则如果不重置，直接rotate是会在以前的基础上
                if (this.rotateStep === 0) {
                    this.canvasTransfer.width = curWidth;
                    this.canvasTransfer.height = curHeight;
                } else if (this.rotateStep === 1) {
                    this.canvasTransfer.width = curHeight;
                    this.canvasTransfer.height = curWidth;
                    this.ctxTransfer.rotate(degree);
                    this.ctxTransfer.translate(0, -this.canvasTransfer.width);
                } else if (this.rotateStep === 2) {
                    this.canvasTransfer.width = curWidth;
                    this.canvasTransfer.height = curHeight;
                    this.ctxTransfer.rotate(degree);
                    this.ctxTransfer.translate(-this.canvasTransfer.width, -this.canvasTransfer.height);
                } else if (this.rotateStep === 3) {
                    this.canvasTransfer.width = curHeight;
                    this.canvasTransfer.height = curWidth;
                    this.ctxTransfer.rotate(degree);
                    this.ctxTransfer.translate(-this.canvasTransfer.height, 0);
                }

                // 生成新的图片,内部坐标会使用原图片的尺寸
                // 宽高在旋转不同的情况下是颠倒的
                if (this.rotateStep & 1) {
                    this.ctxTransfer.drawImage(this.img, srcX / this.scale, srcY / this.scale, sWidth / this.scale, sHeight / this.scale, 0, 0, this.canvasTransfer.height, this.canvasTransfer.width);
                } else {
                    this.ctxTransfer.drawImage(this.img, srcX / this.scale, srcY / this.scale, sWidth / this.scale, sHeight / this.scale, 0, 0, this.canvasTransfer.width, this.canvasTransfer.height);
                }

                this.clipImgData = this.canvasTransfer.toDataURL(this.options.mime, this.options.quality);
            }
        }, {
            key: 'resetClipRect',
            value: function resetClipRect() {
                this.clipRect.style.left = (this.marginLeft || 0) + 'px';
                this.clipRect.style.top = 0;
                this.clipRect.style.width = this.canvasFull.width / this.RATIO_PIXEL + 'px';
                this.clipRect.style.height = this.canvasFull.height / this.RATIO_PIXEL + 'px';
                this.draw();
            }
        }, {
            key: 'getClipImgData',
            value: function getClipImgData() {
                return this.clipImgData;
            }
        }, {
            key: 'rotate',
            value: function rotate(isClockWise) {
                // 最小和最大旋转方向
                var MIN_STEP = 0;
                var MAX_STEP = 3;
                var width = this.oldWidth;
                var height = this.oldHeight;

                this.rotateStep = this.rotateStep || 0;
                this.rotateStep += isClockWise ? 1 : -1;
                if (this.rotateStep > MAX_STEP) {
                    this.rotateStep = MIN_STEP;
                } else if (this.rotateStep < MIN_STEP) {
                    this.rotateStep = MAX_STEP;
                }

                // 计算弧度
                var degree = this.rotateStep * 90 * Math.PI / 180;

                // 重置canvas,重新计算旋转
                this.canvasMag.width = this.canvasMag.width;
                this.canvasMag.height = this.canvasMag.height;

                // 同时旋转mag canvas
                if (this.rotateStep === 0) {
                    this.resizeCanvas(width, height);
                } else if (this.rotateStep === 1) {
                    this.resizeCanvas(height, width);
                    this.ctxFull.rotate(degree);
                    this.ctxFull.translate(0, -this.canvasFull.width);
                    this.ctxMag.rotate(degree);
                    this.ctxMag.translate(0, -this.canvasMag.width);
                } else if (this.rotateStep === 2) {
                    this.resizeCanvas(width, height);
                    this.ctxFull.rotate(degree);
                    this.ctxFull.translate(-this.canvasFull.width, -this.canvasFull.height);
                    this.ctxMag.rotate(degree);
                    this.ctxMag.translate(-this.canvasMag.width, -this.canvasMag.height);
                } else if (this.rotateStep === 3) {
                    this.resizeCanvas(height, width);
                    this.ctxFull.rotate(degree);
                    this.ctxFull.translate(-this.canvasFull.height, 0);
                    this.ctxMag.rotate(degree);
                    this.ctxMag.translate(-this.canvasMag.height, 0);
                }

                this.resetClipRect();
            }
        }, {
            key: 'destroy',
            value: function destroy() {
                this.clear();
                this.canvasFull = null;
                this.ctxFull = null;
                this.canvasTransfer = null;
                this.ctxTransfer = null;
                this.canvasMag = null;
                this.ctxMag = null;
                this.clipRect = null;
            }
        }]);

        return ImgClip;
    }();

    return ImgClip$1;

})));
